Compound having bactericidal and fungicidal properties and process for making the same



Patented May 19 26.

PATENT OFFICE.

ERNST sonLumnEReER, E BERLIN-LICHTERFELDE, GERMANY.

conrouzun HAVING AcrEnrcrnAr. AND EUNeIcinAL PROPERTIES AND PROCESS roE MAKING THE SAME.

I No Drawing.

This invention relates to a compound having bactericidal "and fungicidal properties,

and to a process for making the same. I

may be advantageously used as disinfectants.

or pueserving compounds. They are especially distinguished vby the fact that they are almost wholly inodorous filldhOl'l-POlSOIlfous for men and beasts, so that they can be rine and, which are commonly used for proemployed'without doing; harm to'the same.

In carrying into practice my invention for instance 'sulfite waste-lye whiclris obtained in large quantities as a disagreeable by-product in the manufacture of cellulose from wood is treated with chlorine gas. A yellowish red precipitate is produced which after being separated fromthe remaining solution forms an excellent disinfectant. The product may be improved in its properties by subsequent treatment with oxidizing agents such for instance with a mixture of a chlorate and hydrochloric acid. Preferably the chlorination is conduct-ed in such manner that products containing at least 10 per cent of chlorine are formed, Instead of treating the-vegetable extracts'with free chlorine gas I may add to the said extracts substances which combineto disengage chloducing. chlorine, such for instance as bleach.- ing powder and hydrochloric acid. Bleaching powder may be. added to the vegetable extract and then the required amount of hydrochloric acid may be introduced.

Examples. 1. 10.00 kgrmsof concentrated sulfite waste liquor are diluted with 500 liters of water and treated with chlorine as long as this-is readily absorbed. The separated yellowish red productis filtered voil' and dried. It forms a light yellow mass soluble in water and containing 25 to 28 per cent of chlorine.-

Application filed October 26,1923. Serial No. 670,959.

separated and suspended in watery hydro-. ohlorie acid containing 20 to 25 per cent of hydrochloric acid, to which an amount of potassium chlorate equal to one-fifth of the weight of the precipitate is added' "The product is separated by filtering off and dried; It contains about 30- per cent of chlorine. 4 l

Similar products are obtained by treating with halogen or with substances developing halogen, tanning extracts, for instance lye.

The solution of a substanceobtained in this way shows in dilutions of 1:100 and. 1: 1000 a disinfecting power which is at first equivalent, but for long time is superior in.

intensity to that of carbolic acid. Owing to the inodorousnesjs and harmlessness of the products their adaptability for different purposes is far superior to that of carbolic acid and comprises all form of disinfection. They are also adapted for the disinfection of quebracho extract instead of sulfite waste 43!! seed-grain, for preserving wood, vegetable or animal fibres, hairs, feathers and the like.

Furthermore the products may be mixed with ointments and soaps,-or powders for strewlng on wounds and compresses maybe prepared by mixing the distinfectants with bandages or inert substances such as clay, bolus and the like.

In some cases it may be advisable to modi fy the disinfecting or saniti've power of the compounds by mixing them with other dis infecting or the like agents. The'eflicienc'y.

of the disinfecting solutions depends on their acidity, inasmuch as the action is somewhat. weaker in alkaline than in acid solution. By presence of neutral salts 'the action of the disinfectants made according to the present invention isincreased.

I-claim:- a 1. As a new article of manufacture and trade, a disinfectant obtained by treating 'sulfite waste lye with chlorine andseparating the precipitate thus obtained.

2. As anew article of manufacture and trade a disinfectant obtained by treating'sul- 

